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Finding the Fourth Proportional to 101,658.42, 140,272.29 and 63,905.94

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Solution

The fourth proportional to 101,658.42, 140,272.29 and 63,905.94 is: 88,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,658.42 : 140,272.29 = 63,905.94 : x
  2. Step 2: Convert to fraction form
    101,658.42/140,272.29 = 63,905.94/x
  3. Step 3: Cross multiply
    101,658.42x = 140,272.29 × 63,905.94
  4. Step 4: Simplify right side
    101,658.42x = 8,964,232,548.40
  5. Step 5: Solve for x
    x = 8,964,232,548.40/101,658.42
  6. Step 6: Final answer
    x = 88,179.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.